Novel SnO2@open microcell-liked graphene network as efficient detection for NO2. Issue 197 (24th March 2019)

• Record Type: Journal Article
• Authors: Liu, Xin; Ji, Tianyi; Tian, Menghan; Sun, Jianbo
• Is Part Of: Integrated ferroelectrics. Issue 197(2019)
• Page Start: 111
• Page End: 120
• Publication Date: 2019-03-24
• Subjects: Open microcell-liked graphene network -- heterojunction -- NO2 sensing -- RT; Ferroelectric devices -- Periodicals; Integrated circuits -- Periodicals; 537.244805
• DOI: 10.1080/10584587.2019.1592087
• Languages: English
• ISSNs: 1058-4587

Abstract

Abstract: The design of reduced graphene oxide (RGO) with novel porous structure has attracted tremendous attention owing to their larger specific surface area. Herein, three-dimensional open microcells, bowl-shaped RGO were fabricated through spray drying method which employed polystyrene spheres as a sacrificial template. The bowl-shaped, open microcell-liked pores observed in the RGO network had an average diameter of ≈1 μm. Subsequently, the catalytic SnO2 nanoparticles were loaded on RGO network via a simple solvothermal method (SnO2 @RGO), and their gas sensing properties were investigated at room temperature (RT). In a comparison with pristine RGO network, the SnO2 @RGO composite exhibited almost 4 times higher response to 400 ppm NO2 at RT and rapid recovery time. The extraordinary sensing performance can be attributed to the novel open microcell-liked porous microstructure with the SnO2 catalyst nanoparticles.